Magnetically-controlled impurities in quantum wires with strong Rashba coupling
arXiv:cond-mat/0408656 · doi:10.1103/PhysRevB.71.085318
Abstract
We investigate the effect of strong spin-orbit interaction on the electronic transport through non-magnetic impurities in one-dimensional systems. When a perpendicular magnetic field is applied, the electron spin polarization becomes momentum-dependent and spin-flip scattering appears, to first order in the applied field, in addition to the usual potential scattering. We analyze a situation in which, by tuning the Fermi level and the Rashba coupling, the magnetic field can suppress the potential scattering. This mechanism should give rise to a significant negative magnetoresistance in the limit of large barriers.
4 pages, 2 figures
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- Low-energy theory and RKKY interaction for interacting quantum wires with Rashba spin-orbit coupling
- Spin-orbit induced spin-density wave in a quantum wire
- Spin-photovoltaic effect in quantum wires due to inter-subband transitions
- Spin-orbit coupling effects in one-dimensional ballistic quantum wires
- Half-metal phases in a quantum wire with modulated spin-orbit interaction
- Electron-phonon interaction in a spin-orbit coupled quantum wire with a gap